India, Feb. 14 -- Pima County Sheriff Chris Nanos reacted to theories on the possible involvement of a family member in Nancy Guthrie's disappearance. The 84-year-old was reported missing on February 1 and authorities believe she was taken from her home near Tucson, Arizona, the night before.

Nanos' statement was reported on by Matt Finn of Fox News and comes amid a lot of online speculation about Tommaso Cioni and Annie Guthrie. Annie is Nancy's daughter, and sister to TODAY show host Savannah Guthrie and her brother, Camron. Cioni is married to Annie and was reportedly the last person to see the octogenarian before she was reported missing. He reportedly dropped her off home after dinner with Annie.

Former News Nation journalist Ashle...